package jdbc3_25;

import java.sql.Connection;
import java.sql.PreparedStatement;

public class JDBCDemo09 {
    public static void main(String[] args) {
        try (Connection connection = DBUtil.getConnection()){
            connection.setAutoCommit(false);
            String sql = "UPDATE user "+
                    "SET password=?,nickname=?,age = ? "+
                    "WHERE id = ?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,"123456");
            ps.setString(2,"小明");
            ps.setInt(3,18);
            ps.setInt(4,2);
            int num = ps.executeUpdate();
            System.out.println(num>0?"修改成功":"修改失败");

            connection.commit();
            connection.rollback();
            System.out.println("事务回滚了");
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}
